Does not work (anymore?) with Ctrl + Shift + F :(

don't work on mac

It does nothing with Control+Shift+F (tested on several website, including example.com)

This is the only fullscreen addon I've found that at least partially works. It will open your tab in fullscreen, but you have to press control-shift-f every single time, and once you are in fullscreen, you can't just logically mouse up to the top to show the bookmarks and tabs you've hidden, just nothing appears.

Doesn't work on Flash game sites that have input bar focused —so it's useless like the userChrome.css trick. Make the full screen trigger without window focus. Nevermind, it's a glitch in Habbo site, I'am back to using this userChrome script: https://www.userchrome.org/what-is-userchrome-css.html